| Acronym | Meaning |
| BART | Best Available Retrofit Technology |
| EK | Extended Koopmans (method In Ionization Potential Calcns.) |
| NCDC | National Climatic Data Center |
| CTR | Crystal Truncation Rod |
| SOBO | Spin-orbit (coupled) Bond Orbital |
| FACT | Fuel And Combustion Technology |
| SS | Space Station |
| EEM | Environmental Effects Monitoring |
| DMETEG | Dimethyl Ether Of Tetraethylene Glycol |
| AGR | Advanced Gas-cooled Reactor |